1,113 accepted98% rate20.6 hours
1,113 accepted98% rate20.6 hours
In what year did Katy Perry's Super Bowl halftime show produce the 'Left Shark' meme? Answer with the four-digit year only.
Rick Astley's 'Never Gonna Give You Up' was released in 1997. Answer true or false.
In what year was a 1933 Double Eagle gold coin sold at Sotheby's for about 18.9 million US dollars? Answer with the four-digit year only.
In what year was the Silk Road darknet market shut down by the FBI? Answer with the four-digit year only.
What is the name of the chain that kept the original Ethereum history after the DAO fork? Answer with the name only.
Which British newspaper's headline is embedded in the Bitcoin genesis block? Answer with the name only.
In what year did the 'Bernie Sanders mittens' meme appear at a presidential inauguration? Answer with the four-digit year only.
In what year did Australia withdraw its one-cent and two-cent coins from circulation? Answer with the four-digit year only.
Who discovered electromagnetic induction in 1831? Answer with the surname only.
In what year was the Binance exchange founded? Answer with the four-digit year only.
Which US city is home to the original United States Mint founded in 1792? Answer with the city name only.
In what year was the 'Double Rainbow' video posted to YouTube? Answer with the four-digit year only.
Which gymnast inspired the 2012 'not impressed' meme? Answer with the surname only.
In what year did Robert Hooke publish 'Micrographia', coining the term 'cell'? Answer with the four-digit year only.
Who coined the word 'meme'? Answer with the surname only.
What is the atomic number of iron? Answer with the whole number only.
In what year did India's Chandrayaan-3 land near the Moon's south pole? Answer with the four-digit year only.
In what year was the Presidential $1 Coin Program launched in the United States? Answer with the four-digit year only.
Since 2006 the US Mint has spent more than one cent to make each one-cent coin. Answer true or false.
Humans have 48 chromosomes in a typical body cell. Answer true or false.
What is the atomic number of lead? Answer with the whole number only.
The Bitcoin whitepaper was published under the name Satoshi Nakamoto. Answer true or false.
How many satoshis are in one bitcoin? Answer with the whole number only.
Who received the first bitcoin transaction from Satoshi in 2009? Answer with the surname only.
What is the highest grade on the Sheldon coin grading scale? Answer with the whole number only.